Ruger 223
I break the bolt on my Ruger 223, Last week I left my rifle on the back of my truck on the hunting camp site, next day around 9 am was -20 degree, I took the rifle to shoot a coyote at the time I loaded I fill the bolt hard to close, after I shoot, I can not open the bolt 2 day ago at home (the rifle was warm) I try again and bolt open but the bolt body have a crack and the extractor broken, I think was over pressure, so do not shoot your rifle when is so cold
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